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本文分析了单边量化相关器的误差。由偏差和测量时间有限而引起的总误差与量化输入信号限幅电平有关。文中指出,限幅电平有一个最佳区域,在这个区域内,总的测量误差将最小,而这个最小误差几乎与量化分层数目无关。利用偏差分析的结果,可以得出一个对正态过程和随机相位正弦波都是无偏的不用乘法器的相关器。分析这种相关器的误差可知,它是一种颇为准确而又简单的相关器,因而特别适宜于作高频信号的测量。
This paper analyzes the error of unilateral quantization correlator. The total error due to the bias and the limited measurement time is related to the quantization of the input signal slice level. It is pointed out in the paper that the slice level has an optimal region, and the total measurement error will be the smallest in this region, and this minimum error is almost independent of the number of quantization slices. Using the results of the bias analysis, a correlator without multipliers for normal processes and random phase sine waves can be derived. Analysis of the error of this correlator shows that it is a rather accurate and simple correlator and is therefore particularly suitable for the measurement of high-frequency signals.